Synthesis of an Oxidation Resistant Coating for Ni-based High Temperature Structural Materials by Dip Coating

摘要

High temperature structural materials are becoming increasingly important under the growing demand for stronger materials to work under the aggressive operating conditions of modern gas turbine engines. Alongside the mechanical strength, surface protectiveness of these materials is also of great importance in order to maintain the originally designed microstructure and chemistry. For coating scientists and engineers, a simple and effective method of making surface oxidation- and corrosion- resistant is always preferred. In this study, oxidation resistance of a coating system prepared by means of dip coating is investigated. Cross-sectional morphologies of the dip coated specimens before and after thermal cycling are also characterized using a scanning electron microscope.